Hi, Max - yes, we're paying attention. It's a tradition here that we fully explore a song when a question is posted, often going beyond the scope of the original question.
So far, we've fairly well determined that the verses you seek were not in the original version of the song. We didn't have lyrics posted from a documented source, so it was worthwhile posting the original words. In the meantime, it keeps the thread active so that some knowledgeable person may come up with what you're looking for. I did find out that the Andrews Sisters recorded "Route 66" with Bing Crosby May 11, 1946 - but I haven't found the recording yet. I think I've heard it before, and I don't recall the Ohio or Great Lakes lines. They just don't seem to fit, since Route 66 barely touches the Great Lakes and is a whole Indiana away from Ohio.
I think maybe your verses were added by somebody who was geographically inept, like the novelist who wrote about the salt air of Lake Michigan blowing into Chicago.... (I swear it's true - I read the novel, a German "Krimi.")
Alanabit, you make me feel really old with your Stones and such. The Nat Cole Trio recorded a wonderfully sparse version of "Route 66." I think Nat "King" Cole's later performances of the song may have been more easy-listening - but the first recording was a masterpiece.
-Joe Offer-